References:
[1] http://marc.theaimsgroup.com/?l=fop-dev&m=100559770232644&w=2
[2] http://marc.theaimsgroup.com/?l=fop-dev&m=100790930100949&w=2
[3] http://marc.theaimsgroup.com/?l=fop-dev&m=100386481704186&w=2
In fop 0.20.x unicode characters with value greater 256 not represented in the font
are substituted with the character '#'. With the patch [1] all characters not
represented in the font are substituted. This makes a problem in
LineArea.getCharWidth. Because the line feed character has no glyph the width of the
line feed is computed to the width of the '#' character and is unequal to the space
character. This is the reason for the second problem described in [2].
Attached is a simple patch for fop 0.20.3RC to solve the problem. The patch from Peter
[1](together with the two updates) can now entered in cvs in the maintenance branch.
The patch [1](together with the first update in [2]) should be entered in cvs in the
main branch. The design is easier to understand and the patch solves some design
problems [3]. The attached patch (second update) is not necessary for the main branch
in the moment. I think it is better to wait until the patch is in cvs and then to
change the interface of the font subsystem. If a character is not contained in a font,
the font subsystem should generate an exception. The area tree builder can then decide
to substitute the character or to print a warning message.
Rainer Garus
--- Fop-0.20.3rc/src/org/apache/fop/layout/LineArea.java Sat Jan 19 17:15:36
2002
+++ Fop1/src/org/apache/fop/layout/LineArea.java Wed Jan 30 19:46:52 2002
@@ -1235,51 +1235,53 @@
* versions of space that might not exists in the font.
*/
private int getCharWidth(char c) {
- int width = currentFontState.width(currentFontState.mapChar(c));
- if (width <= 0) {
- // Estimate the width of spaces not represented in
- // the font
- int em = currentFontState.width(currentFontState.mapChar('m'));
- int en = currentFontState.width(currentFontState.mapChar('n'));
- if (em <= 0)
- em = 500 * currentFontState.getFontSize();
- if (en <= 0)
- en = em - 10;
+ int width;
- if (c == ' ')
- width = em;
- if (c == '\u2000')
- width = en;
- if (c == '\u2001')
- width = em;
- if (c == '\u2002')
- width = em / 2;
- if (c == '\u2003')
- width = currentFontState.getFontSize();
- if (c == '\u2004')
- width = em / 3;
- if (c == '\u2005')
- width = em / 4;
- if (c == '\u2006')
- width = em / 6;
- if (c == '\u2007')
- width = getCharWidth(' ');
- if (c == '\u2008')
- width = getCharWidth('.');
- if (c == '\u2009')
- width = em / 5;
- if (c == '\u200A')
- width = 5;
- if (c == '\u200B')
- width = 100;
- if (c == '\u00A0')
- width = getCharWidth(' ');
- if (c == '\u202F')
- width = getCharWidth(' ') / 2;
- if (c == '\u3000')
- width = getCharWidth(' ') * 2;
- if ((c == '\n') || (c == '\r') || (c == '\t'))
- width = getCharWidth(' ');
+ if ((c == '\n') || (c == '\r') || (c == '\t') || (c == '\u00A0')) {
+ width = getCharWidth(' ');
+ } else {
+ width = currentFontState.width(currentFontState.mapChar(c));
+ if (width <= 0) {
+ // Estimate the width of spaces not represented in
+ // the font
+ int em = currentFontState.width(currentFontState.mapChar('m'));
+ int en = currentFontState.width(currentFontState.mapChar('n'));
+ if (em <= 0)
+ em = 500 * currentFontState.getFontSize();
+ if (en <= 0)
+ en = em - 10;
+
+ if (c == ' ')
+ width = em;
+ if (c == '\u2000')
+ width = en;
+ if (c == '\u2001')
+ width = em;
+ if (c == '\u2002')
+ width = em / 2;
+ if (c == '\u2003')
+ width = currentFontState.getFontSize();
+ if (c == '\u2004')
+ width = em / 3;
+ if (c == '\u2005')
+ width = em / 4;
+ if (c == '\u2006')
+ width = em / 6;
+ if (c == '\u2007')
+ width = getCharWidth(' ');
+ if (c == '\u2008')
+ width = getCharWidth('.');
+ if (c == '\u2009')
+ width = em / 5;
+ if (c == '\u200A')
+ width = 5;
+ if (c == '\u200B')
+ width = 100;
+ if (c == '\u202F')
+ width = getCharWidth(' ') / 2;
+ if (c == '\u3000')
+ width = getCharWidth(' ') * 2;
+ }
}
return width;
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